Equivalent & Substitute Parts for 24LCS52/SN

Part Overview

The 24LCS52/SN is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 900 ns access time in an 8-SOIC package. This non-volatile memory device operates across a supply voltage range of 2.2V to 5.5V and is rated for industrial temperature applications from 0°C to 70°C. The part is ROHS3 compliant and actively produced. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package form factor, and electrical operating parameters to ensure functional interchangeability in circuit applications.

Key Parameters

Parameter	24LCS52/SN
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5 ms
Voltage Supply Range	2.2V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 24LCS52/SN are classified based on the following substitution criteria:

Primary Substitutes (Direct Equivalents): Parts maintaining identical memory capacity (2Kbit), memory organization (256 x 8), I2C interface, 400 kHz clock frequency, 8-SOIC package form factor, and compatible voltage supply ranges. These parts include 24AA02-I/SN, 24AA024-I/SN, 24AA02H-I/SN, and 24LCS52-I/SN.

Secondary Substitutes (Enhanced Performance): Parts with identical memory specifications and package but operating at higher clock frequencies (1 MHz) or improved access times. These include 34LC02-I/SN, AT24CS02-SSHM-T, and AT24HC02C-SSHM-B, which provide faster operation while maintaining backward compatibility.

Cross-Manufacturer Substitutes (Package Variants): Parts from alternative manufacturers (Rohm Semiconductor) with matching memory capacity and I2C interface but featuring 8-SOP or 8-SOP-J package variants. These include BR24G02FJ-3GTE2, BR24G02F-3GTE2, and BR24L02FJ-WE2, which require PCB layout verification due to package dimensional differences.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temperature	Package	Product Status
24LCS52/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.2V ~ 5.5V	0°C ~ 70°C	8-SOIC	Active
24AA02-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
24AA024-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
24AA02H-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
24LCS52-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.2V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
34LC02-I/SN	Microchip Technology	2Kbit	1 MHz	400 ns	2.2V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
AT24CS02-SSHM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
AT24HC02C-SSHM-B	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
BR24G02FJ-3GTE2	Rohm Semiconductor	2Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOP-J	Active
BR24G02F-3GTE2	Rohm Semiconductor	2Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOP	Active
BR24L02FJ-WE2	Rohm Semiconductor	2Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOP-J	Active

Engineering Selection Recommendations

For Direct Replacement: Select 24LCS52-I/SN as the primary equivalent. This part maintains identical electrical specifications and package form factor while extending the operating temperature range to -40°C to 85°C and offering verified programmability status. Both parts are ROHS3 compliant and actively produced.

For Extended Temperature Range Applications: The 24AA02-I/SN, 24AA024-I/SN, and 24AA02H-I/SN offer expanded operating temperature coverage (-40°C to 85°C) and lower minimum supply voltage (1.7V) compared to the 24LCS52/SN. These parts are suitable for industrial and automotive environments requiring wider temperature tolerance.

For Higher Speed Requirements: The 34LC02-I/SN, AT24CS02-SSHM-T, and AT24HC02C-SSHM-B operate at 1 MHz clock frequency with improved access times (400 ns to 550 ns), providing performance enhancement while maintaining 2Kbit capacity and I2C interface compatibility. These parts are backward compatible with 400 kHz I2C bus operation.

For Cross-Manufacturer Sourcing: The Rohm Semiconductor BR24G02FJ-3GTE2 and BR24L02FJ-WE2 provide alternative supply sources with 8-SOP-J package variants. The BR24L02FJ-WE2 carries verified programmability status. PCB layout modifications are required due to package dimensional differences (0.154" vs. 0.173" width for 8-SOP variant).

All recommended substitutes maintain ROHS3 compliance and are actively produced with confirmed inventory availability.

Frequently Asked Questions (FAQ)

Q: Can 24AA02-I/SN directly replace 24LCS52/SN in existing designs?

A: Yes, the 24AA02-I/SN is functionally equivalent for I2C communication and memory operations. The primary differences are extended operating temperature range (-40°C to 85°C vs. 0°C to 70°C) and lower minimum supply voltage (1.7V vs. 2.2V). These differences represent improvements and do not create compatibility issues. No circuit modifications are required.

Q: What is the advantage of using 34LC02-I/SN over 24LCS52/SN?

A: The 34LC02-I/SN operates at 1 MHz clock frequency with 400 ns access time compared to 24LCS52/SN at 400 kHz with 900 ns access time. This provides 2.5x faster memory access. The 34LC02-I/SN remains backward compatible with 400 kHz I2C bus operation, allowing use in existing systems without protocol changes.

Q: Are Rohm Semiconductor BR24G02FJ-3GTE2 and BR24L02FJ-WE2 pin-compatible with 24LCS52/SN?

A: Both parts feature 8-pin SOP-J packages with identical pin assignments for I2C interface (SDA, SCL, GND, VCC). However, the package body dimensions differ (0.154" width for 8-SOIC vs. 0.154" width for 8-SOP-J with different lead pitch). PCB footprint verification is required before substitution. Electrical functionality and I2C protocol compatibility are maintained.

Q: Which substitute part offers the widest voltage supply range?

A: The BR24G02FJ-3GTE2 and BR24G02F-3GTE2 operate across 1.6V to 5.5V supply range, providing the lowest minimum voltage specification. The 24AA02-I/SN, 24AA024-I/SN, 24AA02H-I/SN, AT24CS02-SSHM-T, and AT24HC02C-SSHM-B all support 1.7V to 5.5V range. The 24LCS52/SN and 34LC02-I/SN require minimum 2.2V supply.

Q: What is the difference between 24AA02-I/SN and 24AA024-I/SN?

A: Both parts are electrically and functionally identical with matching memory capacity (2Kbit), I2C interface (400 kHz), access time (900 ns), and package (8-SOIC). The part number variation reflects internal design revisions or manufacturing process updates. Selection between these parts is based on inventory availability and supplier preference.

Q: Can I use AT24CS02-SSHM-T in place of 24LCS52/SN for cost reduction?

A: The AT24CS02-SSHM-T provides superior performance (1 MHz operation, 550 ns access time) and extended temperature range (-40°C to 85°C). It is functionally compatible and backward compatible with 400 kHz I2C operation. The part is supplied in Cut Tape & Digi-Reel packaging rather than Tube packaging. Substitution is technically valid; packaging format should be verified against procurement requirements.

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